Cotter-pin puller



A. L. SANDIN.

CUTTER PIN FULLER.

APPLICATION flLED JAN. 2, 1919.

Patented Apr. 27, 1920.-

amaai UNrrED STATES ARTHUR L. SANDIN, OF BISMARCK, NORTH DAKOTA.

CO'.IYTEIRFPIII'l FULLER.

Specification of Letters Patent.

Patented Apr. 27, 1920.

Application filed January 2, 1919. Serial No. 269,280.

T0 all whom t may concern:

Be it known that I, ARTHUR L. SANDIN, a citizen of the United States, residing at Bismarck, in the county of Burleigh and State of North Dakota, have invented certain new and useful Improvements in Cotter-Pin Iullers, of which the following is a speciication, reference being had to the accompanying drawings.

This invention relates to tools on the order of pliers or pincers, and particularly to tools having crossed handles and coacting operating jaws. n

The general object of this invention is to provide a tool whereby cotter pins may be removed and in this connection to provide a tool so constructed that cotter pins may be removed from castellated nuts. Cotter pins are very largely used with castellated nuts and inasmuch as in most cases the head of the cotter pin is set in tlush with the surface of the nut, an implement 'for removing these cotter pins must be so formed that it may get in close to the head of the pin.

Another requirement for a tool of this character is that while it shall engage firmly with the cotter pin it shall not cut it.

Still another requirement is that the tool shall maintain a hold upon the cotter pin so as to prevent the cotter pin from dropping asv without this feature the cotter pin is liable to be lost or to allow the cotter pin to drop into electrical appliances where it will short circuit the current and cause trouble.

With these requirements in view I have devised the cotter pin illustrated in the drawings, wherein Figure 1 is a top plan view of a puller constructed in accordance with my invention' 2 is a side elevatidn of the same'T Fig. 3 is a front elevation, that is looking toward the jaws; and

Fig. 4 is a section on the line 4--4 of Fi 2.

lgis illustrated in the drawings, the implement comprises two crossed handles 10 and 11 having relatively wide portions 12 which lie iiat against each other and which are pivoted to each other by means of a pin 13. The handle 11 is formed with an angularly bent jaw 14, while the handle 10 is Jformed with' a coacting angularly bent jaw 15. Vhen the handles are closed, these jaws lie against each other. The inner faces of the angularly bent terminal portions of the jaws are concavely cut away as at 16. the extremities of the jaws being reduced in thickness and coming down to a point as at 17. 1When the jaws 1a and 15 are disposed in abutting relation to each other, the recesses 16 together form a somewhat ovoidal opening. These portions of the jaws which are disposed parallel to the handles 10 and 11 are provided with coacting cutting edges 18 whereby wire may be cut.

In the use of this invention the head of the cotter pin is gripped between the jaw points 17 and the angular shape of these jaws permits the cotter pin to be withdrawn very readily. It is possible also to insert the extremity 17 of one of the jaws into the eye at the head of the cotter pin and then close the jaws and ulcruming the puller upon any suitable part of the machine withdraw the cotter pin without irst loosening the cotter pin. Il ordinary pliers are used for the purpose of removing a cotter pin, or if any device is used in which the jaws will grip upon the cotter pin, they will be liable to mash the head of the pin or cut it off, whereas with my construction because of the coacting recesses 16 the jaws if closed upon the head of a cotter pin will not mash it or cut through it and cut the head ofi". In my cotter pin puller the extremities of the jaws are round pointed so that vthe jaws may be inserted within the recess oi a castellated nut and be in a position to engage the cotter pin and furthermore in pullingcotter pins by the use of my implement the jaws may be made to meet through the eye of the cotter pin to thus permit the retraction oi the cotter pin without any danger of its loss.

In actual use this implement has been found to 'be extremely convenient and efective as it will pull cotter pins without bending them, ilattening the heads, cutting through the pins, or straightening them.

I claim:

A cotter pin puller comprising crossed handles pivoted to each other at their points of intersection and extended to form conand then being gradually Curved into a may be rocked against the Work in order 10 plane at right angles to the plane of pivotal to remove a Cotter pin.

movement of the handles, those portions of In testimony whereof I hereunto aiix my tlhe jlaWs-h extending at righft angles to he signature in the presence of tWo Witnesses;

and es avinor their inner aces outwar 1 divergent, thebextremities of the jaws being ARTHUR L SANDIN pointed and said extremities being directed Witnesses:

toward each other, the angularA jaws pro- A. S. BOLSTER viding a fulorum upon which the puller MAQDALENE I-onNER. 

